Possible causes – Faulty Transaxle Control Module(TCM) or Engine Control Module(ECM)– Transaxle Control Module(TCM) to Engine Control Module(ECM) harness is open or shorted– Transaxle Control Module(TCM) to Engine Control Module(ECM) circuit poor electrical connection Symptoms – Engine Light ON (or
Possible causes – Faulty Transaxle Control Module(TCM) or Engine Control Module(ECM)– Transaxle Control Module(TCM) to Engine Control Module(ECM) harness is open or shorted– Transaxle Control Module(TCM) to Engine Control Module(ECM) circuit poor electrical connection Symptoms – Engine Light ON (or
Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1603 Information for specific makes P1603 BUICKP1603 CADILLACP1603 CHEVROLETP1603 GMCP1603 HYUNDAIP1603 KIA
P1603 CHEVROLET – Loss of SDM Serial Data
P1603 GMC – Loss of SDM Serial Data
P1603 BUICK – Loss Of SDM Serial Data
P1603 CADILLAC – Loss Of SDM Serial Data